If you look carefully, sometimes interesting clues can be found in your garden, clues left by animals passing through or living within. This empty exuvia (larval skin) was found at the upper pond and belonged to a dragonfly going through metamorphosis. We were very happy to find it because even though dragonflies are clearly breeding in the GNG and laying eggs in the ponds, it was not known if any of the larvae survived once the eggs hatched. The larval stage of dragonflies can last many years; making a pesticide free and stable environment is very important for them to flourish.
So because of a discarded exoskeleton, we are now sure that we have a healthy ecosystem in the GNG's upper pond.